diff --git a/MrCMS.Tests/packages.config b/MrCMS.Tests/packages.config
index 292988418..dd4beb3e0 100644
--- a/MrCMS.Tests/packages.config
+++ b/MrCMS.Tests/packages.config
@@ -24,7 +24,7 @@
   <package id="Ninject.MockingKernel" version="3.2.2.0" targetFramework="net47" />
   <package id="Remotion.Linq" version="2.1.2" targetFramework="net47" />
   <package id="Remotion.Linq.EagerFetching" version="2.1.0" targetFramework="net47" />
-  <package id="SharpZipLib" version="0.86.0" targetFramework="net47" />
+  <package id="SharpZipLib" version="1.3.3" targetFramework="net47" />
   <package id="System.Data.SQLite.Core" version="1.0.105.2" targetFramework="net47" />
   <package id="xunit" version="1.9.2" targetFramework="net47" />
   <package id="xunit.extensions" version="1.9.2" targetFramework="net47" />